|a.||1.||Of or pertaining to the left, inclining to the left; sinistrous; - opposed to |
|2.||(Zool.) Having the whorls of the spire revolving or rising to the left; reversed; - said of certain spiral shells.|
|Adj.||1.||sinistral - of or on the left; "a sinistral gastropod shell with the apex upward has its opening on the left when facing the observer"; "a sinistral flatfish lies with the left eye uppermost"|
dextral - of or on the right; "a dextral gastropod shell with the apex upward has its opening on the right when facing the observer"; "a dextral flatfish lies with the right eye uppermost"
|2.||sinistral - preferring to use left foot or hand or eye; "sinistral individuals exhibit dominance of the left hand and eye"|